WEPA40 RJTD 132120

TSUNAMI BULLETIN NUMBER 001

   ISSUED BY NWPTAC(JMA)

   ISSUED AT 2120Z 13 NOV 2015

PART 01 OF 01 PARTS



HYPOCENTRAL PARAMETERS

ORIGIN TIME:2051Z 13 NOV 2015

PRELIMINARY EPICENTER:LAT30.9NORTH LON128.7EAST

 NORTHWEST OF RYUKYU ISLANDS, JAPAN

 SOUTHWESTERN JAPAN AND RYUKYU ISLANDS

MAG:7.0(MJMA)



EVALUATION

 THERE IS A VERY SMALL POSSIBILITY OF A DESTRUCTIVE LOCAL TSUNAMI



ESTIMATION AT THE FORECAST POINTS - NO TSUNAMIS WITH

AMPLITUDE OF 0.5 METER OR OVER ARE EXPECTED AT ANY OF THEM.



HOWEVER AT SOME COASTS, PARTICULARLY THOSE NEAR THE EPICENTER, HIGHER

TSUNAMIS MAY ARRIVE THAN OUR ESTIMATION AT THE NEARBY

FORECAST POINTS

AUTHORITIES SHOULD BE AWARE OF THIS POSSIBILITY.



FURTHERMORE THE EVALUATION OF TSUNAMIGENIC POTENTIAL AND ESTIMATED

ARRIVAL TIME OF TSUNAMIS MAY BE DIFFERENT FROM THOSE OF PTWC

DUE TO DIFFERENCES IN THE ESTIMATED EARTHQUAKE PARAMETERS

AUTHORITIES SHOULD USE THE EARLIEST ARRIVAL TIMES FOR

GREATEST SAFETY.



THIS WILL BE THE FINAL BULLETIN UNLESS THERE ARE CHANGES ABOUT

THE POTENTIAL OF TSUNAMI GENERATION BY RE-EVALUATION OF THE

EARTHQUAKE OR THERE ARE REPORTS ON TSUNAMI OBSERVATIONS.



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